Means for controlling the flow of air.



No. 848,803. PATENTED APR. 2, 1907.

J..H. BRADY.

MEANS FOR CONTROLLING THE FLOW OF AIR.

APPLIUATION FILED MAR. 22, 1906.

2 SHEETS-SHEET 1.

79 M 20- 21 23 Qt Yl/Ilnmsrs? Jseph H..Brady No. 848,803. PATENTED APR.2, 1907. J. H. BRADY.

MEANS FOR CONTROLLING THE FLOW OF AIR.

APPLICATION FILED MAR.22,1906.

2 SHEETSSHEET- 2.

7 7 Irma/1Z0);

Joseph H Brady f m zzw UNITED STATES PATENT OFFICE.

JOSEPH H. BRADY, OF KANSAS CITY, MISSOURI.

MEANS FOR CONTROLLING THE FLOW OF AIR;

specificatiodi of Letters Patent.

Patented A ril 2, 1907.

Application filed March 22, 1906. Serial No 307,536-

ling the volume of air passing through an airshaft, means for diffusingsaid air so that it will not escape merely from the upper portion of theair-shaft outlet, but will be equally distributed throughout the entirearea of said outlet, and means for deflecting'the air as it escapesfrom. the outlet, so that it maybe turned in any desired direction.

The invention is applicable to systems for circulating either hot orcold air, and the parts so cooperate that the volume, distribution, anddirection of the air as it escapes from the outlet may beregulated atwill.

The invention consists in the novel construction,combination, andarrangementof' parts hereinafter described, and pointed out in theclaims, and in order that it maybe:

fully understood reference will now be made to the accompanyingdrawings, in which Figure 1 represents a vertical central 'sec-' tion ofan air-shaft. provided with my iI'n-. provements.

v Fig. 2 is a front elevation of the discharge end of said shaftprovided with my improvements. Fi 3 is a broken transverse section takenon ine III III of Fig. 1.

Fig. 4 is an enlarged detail front elevation ofmeans for securing thedeflectors at any point of their adjustment. Fi 5is an enlarged verticalsection taken on hne V V of Fig.2.

1 designates anair-shaft provided with a metallic lining 2, dividedat'its upper portion by a diffuser of peculiar form consisting ofmetallic plates 3, the lower portions of which extend downwardly intothe air-shaftvariable distances, while their upper portions are arrangedin the form of concentric curves and }terminate in vertical alinement,as shown in By making the lower portion of the plates of differentlengths all tendency of hot air to rush to the upper rear portion of theair-shaft is overcome, and each division will receive its proper shareof air, so that the latter will be difl'used throughout the entire areaof the shaft-outlet.

outer portion. 13.

fto frame 15.

ranged in two series of three blades each, .provided at their rear sideswith pintles l8, 1

4 designates a series of dampers pivotally secured to the plates 3andthe curved upper portion 4 of the air-shaft for regulating the volumeof air as it flows outwardly through the deflector hereinafterdescribed, and in order that said dampers may for convenience besimultaneously operated I connect them to an adjusting-rod 5 through theinstrumentality of links 6 and sleeves 7. Sleeves 7 are adjustablysecured to the rod by means of setscrews 8. Thus each sleeve may beproperly 4 adjusted, so that when the rod is drawn out wardly far enoughall of the dampers will completely close the air-passages: between theplates 3, and thus prevent further circulation of air through the shaft.

Rod 5 extends through sleeves 9 and 10 in the front and rear walls,respectively, of the shaft, and its rear terminal is provided with a nut11. Rod 5 is adjusted inwardly or outwardly by a nut 12, engaging itsthreaded The rod is prevented from turning with'nut 12 by set-screws 8.Nut 12 is held from moving longitudinally with the adjusting-rod bymeans of a bracket 1'4, engaging its front and rear sides and seouredtothe face. of a rectangular metallic frame-15, surrounding the flaringoutlet 16 of air-shaft 1.

the air escapes from outlet 16 it may be d'e flected in any) directionby a deflector con- Sisting of blades 17, the central oneof which isrigidly secured at its upper and lower ends Its companion blades arearpivotally mounted in the upper and lower portions of 'frame 15.

taneously moved either to the right or left, I provide them withdepending stems l9, pivotally secured to a connecting-bar 20, the twoouter stems being provided with nuts'21 for supporting the bar, whilethe central stem extends through a slotted segment 22 and is providedwith a clamping-nut 23, adapted to frictionally engage the under side-ofsegment 22, and thus reliably hold the blades in their adjustedposition. Segments 22 are secured to the. front. lower portion of frame15 by screws 24:.

In practiceas the air ascends shaft 1 it will be equally divided by thediffuser, which causes it to discharge evenly throughout the area ofoutlet 16, so that its entire volume will not, as heretofore, impingeagainst the In order that the blades comprising each series may besimulupper curved portion of the shaft and flow in this manner fromoutlet 16. By thus diffusing the air before permitting it to escape intothe apartment communicating with the airshaf-t it will be morethoroughly distributed throughout said apartment, and consequently provemuch more effective than if permitted to escape whenv compact. As theair discharges from outlet 16 it may be directed to the right or left orstraight ahead by blades 17 which have been previously set to divert theair in the desired direction.

From the above description it is obvious that I have produced means forre ulating the flow of air, so that the greatest e .ciency will beobtained therefrom, and While I have shown the preferred construction ofmy device I of course reserve the right to make such changes as properlyfall within the spirit and scope of the appended claims.

. Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a device of the character described, the combination with an airshaft having an outlet, a diffuser dividing said shaft and con sistingof plates for directing the air to the outlet, dampers adjustablysecured to said plates, a rod for adjusting said dampers provided with athreaded end, means for preventing said rod from turning, a nut engagingthe threaded end of the rod for moving the latter inwardly or outwardly,a bracket for preventing said nut from moving longitudinally with therod, and a rectangular frame surrounding the outlet and carrying saidbracket.

2. In a device of the character described, the combination with anair-shaft having an outlet, a deflector arranged at said outlet andconsisting of a plurality of adjustable blades arranged in two or moreseries, a connectingbar uniting each series so that they may beindependently'adjusted, a slotted segment arranged adjacent to eachconnecting-bar, a stem extending through each connectingbar and slottedsegment, and clamping-nuts engaging the stems.

In testimony whereof I afiix my signature in the presence of twowitnesses.

JOSEPH H. BRADY. Witnesses:

F. G. FISCHER, J. MOORE.

